Lennox Air Conditioner Prices

Lennox is one of the biggest names in the industry today with a large legacy to show off. Founded in 1895, it is one of the oldest manufacturers of air conditioning units out there.

Now an international name, Lennox does not only produce air conditioners but other items as well including refrigerators and heating ventilation. Thanks to its continued great work, Lennox is considered as one of the most reliable names in the industry even by Consumer Search.

The company produces energy saving products, marked Energy Star, which can help you save money on utility bills.

While Lennox may be offering a little expensive products, they are worth the price as they are highly durable and provide great results. However, it can cause you problems if you need repairs in the future as it is not always easy to acquire Lennox parts, which are expensive and also not easily available.

Let’s get to know more about the cost of buying a new Lennox air conditioner or replaced an old one:

What Is The Cost of Lennox Air Conditioning?

There can be no one word answer to this question as the cost depends on several factors including the type and size of the units that you purchase.

The bigger the room, the bigger AC you will need. Typically, it costs about $2,900 to $7,500 to get a new Lennox unit. While this is higher than most products out there, it’s worth it since Lennox is a premium brand and justifies the price by providing great products.

However, remember that the final cost of installing a Lennox air conditioner does not only depend on the unit but other factors as well including required ductwork, and of course installation charges.

Plus, there are some saving opportunities also available in addition to financing. Both these options are discussed later in this article in detail.

Size of Lennox AC to Pick

Lennox is a company that caters to all kinds of clients and hence have units of different sizes. 

Here is the size chart of the units produced by the company:

  • 1.5 ton (smallest)
  • 2 ton
  • 2.5 ton
  • 3 ton
  • 3.5 ton
  • 4 ton
  • 5 ton

If you have a small room you can go for the 1.5 ton unit, which is perfect for a 500 sq. ft. room, however the right size depends on several factors including the condition of the room.

Determining the right size can be troublesome for you, but worry not because Lennox offers help in this regard. You can easily go to the company’s official site and find an authorized dealer who will answer all your questions regarding the installation process and also install the unit for you.

Remember SEER Settings

SEER, short for Seasonal Energy Efficiency Ratio, helps understand how a unit would perform. A unit with a higher rating performs better and allows you to save more.

Lennox offers a great variation in terms of SEER rating. While 16 is said to be the most popular SEER rating, Lennox units come between 13 to 26 SEER ratings making it one of the few companies to offer such a huge range as very few providers make units with a SEER rating as high as 26.

You must consider SEER ratings when picking a unit. As per US standards, minimum acceptable SEER rating for units installed in the Southeastern and Southwestern Regions is 14 SEER. 

For all other regions, it is 13 SEER, but all Energy Star products should be a minimum of 14 SEER.

Many households still have old units that came with lower ratings. If you have such a unit then consider replacing it with a new one.

The company offers several air conditioners with a rating of 13 or more so picking one will not be a problem for you. You can find more about different units and their SEER ratings below with the prices.

Lennox AC Units: Prices 

Check out the table below for prices of different units from Lennox with different SEER ratings. The table contains a mix of units covering units with lowest to higher SEER ratings.

However, remember that the first table only shows the prices for replacing the indoor and outdoor unit (3 ton), refrigerant lineset and thermostat. It does not include the cost for furnace, air handler, and ductwork. These things may add up to the cost.

Lennox Air Conditioner Prices by Model Name

Trane Models


Efficiency Ratings

Price with Installation

Lennox 13ACX




Lennox 14ACX




Lennox XC13


15.5 SEER


Lennox ML14XC1




Lennox XC14




Lennox EL16XC1




Lennox XC16




Lennox XC17




Lennox SL18XC1


18.5 SEER


Lennox XC20




Lennox XC21




Lennox XC25




The cheapest unit from the company is the Lennox 13ACX that sells for $2,820 and offers 13 SEER rating, which is the minimum acceptable SEER rating. The prices go up as the rating increase as the chart is based on SEER ratings.

Moreover, the cost includes the cost of installation as well based on normal level of difficulty. In case of more difficult installation, such as installation in hard to reach areas, the cost may slightly be more.

In the second chart, the prices are based on the size of the unit but do not include the cost for air handler and ductwork.

Lennox Air Conditioner Prices by Size

AC Size

Cooling Area

AC Unit & Coils

Total Cost with Installation

1.5 ton

550-900 sf



2 ton

900-1200 sf



2.5 ton

1,200-1,500 sf



3 ton

1,500-1,800 sf



3.5 ton

1,800-2,100 sf



4 ton

2,100-2,400 sf



5 ton

2,400-3,000 sf



2 Units

3,000-4,000 sf



All above units come with 16 SEER settings, which is the most preferred SEER setting.

Lennox Financing System

If you want to try Lennox products but do not have the budget then you can enjoy the benefits financing. The terms are quite easy and customer friendly. 

With third party financing, you enjoy no interest financing with plans available for almost all credit levels. Moreover, there are about 28 different loans to help you pick the right one. It is also quite easy to qualify for financing but some documentation will be required.

The application is typically approved within minutes. You enjoy financing at 0% APR (72 months) divided into monthly payments of equal size. Plus, there is no worry for a down payment either and you even enjoy the ability to clear the account before time without worrying about any sort of a penalty.

Available Saving Opportunities and Tax Breaks

The government offers rebates when you buy energy efficient products. You can save up to $1,700 if you pick a qualified product, however the savings depend on where you live. Check dsireusa.org to know more about how much you can save under rebates.

Moreover, you can enjoy tax benefits as well if you pick solar-ready units (XC17, XC20, XC21,XC25 ) from Lennox. Plus, The Consortium for Energy Efficiency also lets you enjoy tax breaks if you meet the criteria that includes picking a unit that is at least 14 SEER rating.

You can check with the company to know more about running promotions and saving opportunities.

Product Warranties

Lennox offers peace of mind to all its users with wide Lennox warranties. You do not need to register the product to be eligible for general warranties, however if your product qualifies for a lifetime warranty then you will have to register with the company first.

The company does not provide any labor warranty, however you can purchase it separately for the first five years. Compressor and parts are covered.

Here are the details:


Compressor Warranty

Parts Warranty


10 Years

10 Years


5 Years

5 Years


10 Years

5 Years

The company offers lower warranty on some models to justify the price. However, you can opt for extended warranties handled by a third-party. For example, you can get a 10 year warranty on parts for Elite models for an extra pay which depends on the model and new terms and can cost you as high as $2,000.

It should be mentioned that these third-party warranties are not always reliable and often come with terms, such as a maintenance contract.

Product Repairs and Costs

Lennox offers solid products that typically do not require repairs for the first few years, but you will eventually need some after 10-20 years.

The problem here is that most generic parts do not go well with Lennox products and you must only get proprietary parts, which may be expensive and at times hard to acquire due to unavailability, which may delay repairs.

How to find the Best Installer for your Lennox AC Unit

Finding the right contractor can take just as long as finding the right AC unit, so take your time and don’t settle for the first quote that fits your budget. If you’re ready to get started, check out our free estimate tool here.

It is free and convenien, and you have NO obligation to accept any estimates offered.

Fill out a short form about what work you want done. Then your information is sent to pre-screened HVAC installers in your area. They will respond with estimates for air conditioners and installation costs. The estimates already include the latest local rebates and tax credit info.

Feel free to share this tool with your friends or neighbours if it is helpful.

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